What type of cut-off valve is suitable for use in high-temperature, high-pressure environments with high dust content in crude syngas?
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I recently came across a project that involves a situation as described in the title. I would appreciate it if experts could share their opinions on this matter. Thank you!
Hello, original poster! Your application scenario is indeed quite rare. If the diameter isn’t large, I think butterfly valves and ball valves are the most suitable options; however, the performance of butterfly valves might be slightly inferior, as the disc has to be exposed to the flow of fluid, and at high pressures the flow velocity is fast and the dust content is high, which certainly has a significant impact on the service life of the disc (it may even be necessary to replace the disc and valve seat frequently). Ball valves perform better in such situations. In any case, the decision ultimately depends on your specific process parameters and configuration. These are just some humble suggestions for your reference.
Hey expert up there, according to what you said, with a diameter of 400 and a pressure of 600 lb, can disc valves and ball valves be used?
Hello, original poster! If the diameter is large, butterfly valves might not be suitable; however, it still depends on the specific operating conditions. Additionally, the original poster could consider disc valves, which are appropriate for applications involving high temperatures and pressures, large sizes, high flow rates, and demanding wear-resistant conditions.
Ball valves are the best choice for high temperature and high pressure! The sealing surface is capable of withstanding operation under high temperature and pressure conditions! Disk valves can also be an option, but their sealing isn’t as tight, so there’s a risk of leaks over time
Friend upstairs, you are completely mistaken. The sealing surface of a disc valve has a planar structure, and the core design principle is to ensure that the valve disc does not separate from the valve seat, thereby maintaining a seal. I suppose you are worried that the valve disc may not be able to withstand the pressure and the material flowing through it; however, there is no need for such concern. In my opinion, sealing with a disc valve should not be a problem. Theoretically, a planar sealing structure offers significant advantages over a spherical one in terms of both sealing performance and machinability. The only uncertainties lie in price and cost factors, as the special structure of disc valves results in them being heavier than ball valves of the same diameter. This is just my humble opinion for your reference.
Using a ball valve with a metal hard seal would be fine, that’s what I think~~
Using ball valves generally poses no problems; it’s just the price that needs to be considered